How can we improve the Microsoft Edge developer experience?

APNG (animated PNG) images support [Firefox and Safari 8 support it]

APNG is an extension of the Portable Network Graphics (PNG) format, adding support for animated images. It is intended to be a replacement for simple animated images that have traditionally used the GIF format, while adding support for 24-bit images and 8-bit transparency. APNG is backwards-compatible with PNG; any PNG decoder should be able to ignore the APNG-specific chunks and display a single image.

Just so you know, WebM isn't comparable, as VP8 is strictly lossy, while VP9 still allows lossy compression, whereas the point of APNG is returning the very same image sequence as the source, also thanks to up to 16 bit per channel and alpha support. When dealing with text and various computer generated images, lossless compression is critical not to introduce visible artifacts and often has minimal overhead compared to lossy compression, in the case of text and simple shapes it can be way more efficient than DCT-derived lossy compression, actually.

Could you please stop make the web a mess... Focus on Windows an stop making this cancer browser, please... I was so happy when IE died... an then... IT came out of the cave... All the errors all the lies about a great browser. It's like a Zombie IE. Please for Gods sake stop it!